Adolescent ; Diagnosis, Differential ; Disorders of Sex Development ; Female ; Humans ; Male ; Neoplasms, Germ Cell and Embryonal ; pathology ; radiotherapy ; surgery ; Seminoma ; pathology ; Testicular Neoplasms ; pathology ; radiotherapy ; surgery

Objective To investigate the effect of chymase on the proliferation of rat cardiac fibroblasts (CFs) and the role of transforming growth factor-?1 (TGF-?_1).Methods Cultured CFs of neonatal SD rats were isolated by trypsinization.Cell number and DNA synthesis were evaluated by MTT assay (A_(490) value) and [~3H]-deoxythy- midine [~3H]-TdR incorporation.The mRNA expression of TGF-?_1 in CFs was determined by RT-PCR.Results Chymase increased CFs numbers and [~3H]-TdR incorporation in a dose-dependent manner.The A_(490) value of CFs stimulated by 15,30 and 60 ng/mL chymase was 0.263?0.033,0.348?0.031 and 0.387?0.026,respectively, which were all significantly higher than that of control (0.201?0.019,P

Objective To explore the causes of postoperative recurrence in patients of nodular goiter,the selection of method for reoperation and the postoperative complications. Methods The clinical data of 278 nodular goiter patients admitted in the first affiliated hospital of Harbin Medical University between 2001 and 2008 were analyzed retrospectively,including the methods and complications for first operation and reoperation. Results In the first operation,79 eases received simple eminectomy and 167 cases received partial lobectomy,accounted for 28.4% and 60.1%,respectively. Unilateral subtotal lobectomy plus contralateral eminectomy was performed in 23 cases and subtotal thyroideetomy was conducted in 9 cases,accounted for 8.3% and 3.2%,respectively. Postoperative complications occurred in one hundred and twenty-three cases,the incidence being 8.2% (23/278). Unilateral subtotal Iobectomy plus contralateral partial iobectomy was reperformed in 37 cases and bilateral subtotal thyroidectomy in 241 cases. Postoperative complications occurred in 12 cases,the incidence being 4.2%(12/278). No postoperative recurrence of nodular goiter was found. Conclusions Recurrence of nodular goiter is closely associated with the scope of previous surgical treatment,and correct operative manipulation may reduce the recurrent rate.

OBJECTIVETo observe dynamically the development of fetal long bone and detect the expression and distribution of HIF-1alpha,to investigate the expression pattern and possible effects of hypoxia inducible factor-1alpha (HIF-1alpha) in fetal long bone development of mouse.

METHODSE12.5, E13.5, E14.5, E15.5, E16.5 and E17.5 pregnant C57BL6 mice were sacrificed. After sacrifice, the embryos were delivered by caesarean section. The development of fetal long bone was dynamically observed by stereoscopic microscope, and the distributional expression of HIF-1alpha protein was detected by using method of immunohistochemistry. The expression of HIF-1alpha mRNA and osteoblast marker gene at various stage were also detected by using methods of reverse transcription-polymerase chain reaction (RT-PCR).

RESULTSThe cartilaginous long bone began to form and joints outline arised at E13.5, then the primary ossification center was observed at E14.5, showing opaque ossification under stereoscopic microscope,and then the osteogenesis expanded and extended to both sides. Immunohistochemistry demonstrated lots of HIF-1alpha protein positive chondrcytes in the center of primary ossification at E14.5, then they decreased dramatically. HIF-1alpha mRNA expressed at high level from E13.5 to E15.5, and then decreased to low level.

CONCLUSIONFetal long bone development pattern appeared to be endochondral osteogenisis process, existing hypoxia microenviroment may increase HIF-1alpha mRNA expression and thus initiate the cascade of endochondral osteogenisis.

Animals ; Bone Development ; Female ; Hypoxia-Inducible Factor 1, alpha Subunit ; analysis ; genetics ; physiology ; Immunohistochemistry ; Male ; Mice ; RNA, Messenger ; analysis

Objective To find out the iodine nutritional status of children in Xiamen island, and to provide the scientific basis for iodine supplimentation. Methods On March 2010, thyroids of all children aged 6to 12, from primary school on the Xiaodeng island of Xiamen were examined by palpation, urinary iodine, iodine content of salt athome and IQ level were tested, and were collected 20 households, iodine content of drinking water was tested randomly. Results IQ testing and thyroid palpation were carried out among a total of 156 children, the goiter rate of children was 1.28% (2/156), the mean IQ was 110; 154 urine samples were taken, the median urinary iodine was 219.1 μg/L; a total of 153 salt samples were tested, and the qualified rate of iodized salt was 87.58%(134/153), and the mean iodine content in the tap water was 4.52 μg/L Conclusions Iodine nutritional status of the island residents is better, and there are no such problems as excessive iodine.

OBJECTIVETo study the mechanism of Shenkangwan (SKW) in treating early diabetic nephropathy (DN).

METHODSThe effect of SKW on NO and transforming growth factor (TGF)-beta(1) production by the mesangial cells (MCs) of rats with early diabetic nephropathy was evaluated with serum pharmacological method.

RESULTSCompared with normal serum, the SKW-containing serum dose- and time-dependently inhibited TGF-beta(1) excretion and increased NO production in the MCs of rats with early DN (P<0.05 and P<0.01, respectively).

CONCLUSIONThe therapeutic effect of SKW on early DN may rely on the balance modulation of cytokine network by increasing NO production and decreasing TGF-beta(1) excretion to prevent cytokine-induced damage of the MCs.

Animals ; Diabetes Mellitus, Experimental ; drug therapy ; metabolism ; Diabetic Nephropathies ; drug therapy ; metabolism ; Drugs, Chinese Herbal ; therapeutic use ; Glomerular Mesangium ; metabolism ; pathology ; Male ; Nitric Oxide ; biosynthesis ; Rats ; Rats, Wistar ; Transforming Growth Factor beta ; biosynthesis

OBJECTIVETo compare the biomechanical performances of different wires and cable fixation devices in posterior instrumentation for atlantoaxial instability, and test the effect of different fixation strengths and fixation approaches on the surgical outcomes.

METHODSSix specimens of the atlantoaxial complex (C0-C3) were used to establish models of the normal complex, unstable complex (type II odontoid fracture) and fixed complex. On the wd-5 mechanical testing machine, the parameters including the strength and rigidity of anti-rotation, change and strength of stress, and stability were measured for the normal complex, atlantoaxial instability complex, the new type titanium cable fixation system, Atlas titanium cable, Songer titanium cable, and stainless wire.

RESULTSThe strength and rigidity of anti-rotation, change and strength of stress, stability of flexion, extension and lateral bending of the unstable atlantoaxial complex fixed by the new double locking titanium cable fixation system were superior to those of the Songer or Atlas titanium cable (P<0.05) and medical stainless wire (P<0.05). Simultaneous cable fastening on both sides resulted in better fixation effect than successive cable fastening (P<0.05). Better fixation effect was achieved by fastening the specimen following a rest (P<0.05).

CONCLUSIONSThe fixation effects can be enhanced by increased fastening strengths. The new type double locking titanium cable fixation system has better biomechanical performance than the conventional Songer and Atlas titanium cables. Fastening the unstable specimens after a rest following simultaneous fastening of the specimen on both sides produces better fixation effect.

Atlanto-Axial Joint ; physiopathology ; surgery ; Biomechanical Phenomena ; Bone Wires ; Cadaver ; Humans ; Internal Fixators ; Joint Instability ; physiopathology ; surgery ; Orthopedic Fixation Devices

Objective To investigate the current conditions of water iodine,childrens'iodine nutrition and residents'edible circumstance of iodized salt in the villages with high iodine in drinking water and the adjacent three villages in Xiamen city of Fujian province.Methods Four natural villages of Qianbian,Donglian,Dazhong and Dongshan of Xiangan county were chosen as survey spots in 2008.In each village,one running water sample and all well water samples were collected to obtain the benchmark for each location.All children aged 7-13 year in the four villages underwent thyroid palpation and were selected to measure the urine iodine and the salt iodine.The water iodine and urine iodine were determined by As3+-Ce4+ catalytic spectrophotometry digestion,salt iodine was determined by direct titration.Results In four investigated villages,iodine of four running water samples were all 1.5μg/L.The range of 237 well water iodine samples was from 0.1 μg/L to 506.0 μg/L.There were 18.6% (44/237)specimens in which the well water iodine less than 10 μg/L,73.4%(174/237)between 10 μg/L and 150 μg/L and 8%(19/237)more than 150μg/L.The median of urinary iodine was 153.3 μg/L in 79 urine samples,which was 114%(9/79)more than 200μg/L and less than 300μg/L,12.7%(10/79)equal or more than 300 μg/L and less than 500μg/L,7.6%(6/79)equal or more than 500μg/L and less than 800 μg/L in all samples.Seventy-nine students were examined by palpation and the total goiter rate of children measured was 11.4% (9/79).Seventy-one samples of iodine salt were detected and the coverage rate of iodized salt was 77.5%(55/71).Conclusions The well water iodine contents have a wide distribution in the investigated villages.We should enhance the community awareness by educating them on the damage of iodine excess and iodine deficiency.

OBJECTIVETo investigate the effects of Shenkang pill on renal function and extracellular matrix secretion on the diabetic rats.

METHODThe diabetic rat models were induced by intraperitoneal injection of streptozotocin (STZ) and randomly divided into 3 groups' model control group; Capoten group and Shenkangwan group. Some normal other rats were used as normal control group. All rats were treated with corresponding drugs for 8 weeks. During and after the treatment, the general state, blood and urine glucose levels, excretion rate of the 24 hour urine protein and albumin, serum creatinine and blood urea nitrogen contents, kidney weight and relative kidney weight were measured. The mRNA of fibronectin(FN) in the kidney also detected by semi-quantitative reverse transcription polymerase chain reaction(RT-PCR).

RESULTDiabetes mellitus and renal lesions occurred in the three model groups. The expression of FN mRNA of the kidney in diabetic rats increased obviously. Shenkang pill could improve the general state and renal function of the diabetic rats, decrease the blood glucose levels and the excretion rate of the 24 hour urine protein and albumin, reduce the expression of FN mRNA in kidney.

CONCLUSIONShenkang pill has a certain protective effect on the diabetic kidney.

Animals ; Blood Glucose ; metabolism ; Blood Urea Nitrogen ; Diabetic Nephropathies ; chemically induced ; metabolism ; pathology ; Drug Combinations ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Fibronectins ; biosynthesis ; genetics ; Glycated Hemoglobin A ; metabolism ; Kidney ; metabolism ; Male ; Plants, Medicinal ; chemistry ; RNA, Messenger ; biosynthesis ; genetics ; Random Allocation ; Rats ; Rats, Wistar ; Streptozocin

OBJECTIVETo study the quality difference among Citrus grandis 'Tomentosas' of different cultivars, in order to provide scientific basis for seeking for fine breeds.

METHODThe HPLC fingerprints were established for C. grandis 'Tomentosa' of different cultivars in the GAP base of Huazhou Green Life Co., Ltd. The software of similarity evaluation system of traditional Chinese medicine HPLC fingerprints 2004A edition of Chinese Pharmacopoeia Commission was adopted for the similarity analysis and judgment of cultivars.

RESULTThe fingerprints showed similar general characteristics of samples of different cultivars. Specifically, the similarity of areas of the 18 common peaks ranged between 0.938-0.998. The success rate of judging cultivars using similarity software stood at 92%.

CONCLUSIONThis method can be applied to better identify quality and source of cultivars of C. grandis 'Tomentosa', and provide technical measures and scientific basis for seeking for fine breeds of Citri Grandis Exocarpium.

China ; Chromatography, High Pressure Liquid ; methods ; Citrus ; chemistry ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; standards ; Quality Control